I find myself heartbroken that there are people defending a genocide and the decades long dispossession of innocent people. This isn't some abstract matter of opinion. This isn't about a desire to win an argument.
If you want to talk about how to end that dispossession and slaughter, there's a degree of nuance we could explore. Reasonable people can have differences of opinion. But if you want to justify it, then yes, you're morally bankrupt and I have no respect for you. Any more than I could have respect for someone who defended the persecution of Jews or slavery or segregation or the criminalisation of gay people. As many people who imagined themselves to be reasonable did.
There is, in fact, such a thing as the right thing to do sometimes. I'm truly sorry for the people who don't understand this.
There is also such a thing as the historical truth beyond a reasonable doubt. I would respond with the exact same degree of ridicule to someone who thought I was being closed minded because I've "reached my opinion" about the Holocaust, for example. I have no interest in revisionist histories about that either. And I suspect there, you agree with me, but you don't even acknowledge the hypocrisy, do you?